High disk IO problem in Windows HyperV Server


Are your customers facing slowness in their Windows VPS?

Are you using HyperV virtualization technology for a Windows VPS?

Is your customer service desk full of the same delay theme?

– Then this is probably a problem with High Disk I / O in the main node.

Poor server performance usually occurs due to factors such as …

– Excessive use of RAM

– IO with high disk

– High CPU usage

– High network usage

– Low network connectivity, etc. …

Finding a solution to poor performance is somewhat like conducting scientific experiments. When you notice that the server performance is not what you want it to be, the first thought that comes up of several options should be the active threads on your server that consume high IO resources. Setting up your thread will act as a key to normalize your server. To achieve more satisfactory server performance as a result of several thread tuning modifications, you can assume / assume that the specific thread tuning shows the best server performance.

How do I identify and resolve a low server performance issue?

You can check for the steps below to identify the problem with slow server performance due to high disk input / output:

  • First log in to the HyperV node, then open the Task Manager, on the Performance tab, click Resource Monitor.
  • Click the Disk tab under Disk Activity Check to see if the maximum active disk time is between 95% to 100%, and then identify this process or VPS that is performing a high read and write operation.
  • If this process is ‘$ LogFile’, click Start -> Administrative Tools -> Event Viewer. In the Event Viewer window, click Windows Logs -> Security (in the left pane) and check if an event is continuously writing logs, and then stop the process.
  • If a Windows VPS is performing a high read / write operation, log in to that VPS and check which process is responsible for the high use of IO resources. If we find that the use of RAM and reading / writing the page.sys file is higher, you should notify this client to add more RAM to the VPS. Because we know that when using RAM on any Windows-based system, it will use a small amount of hard disk as virtual memory and this will put a heavy load on the main server’s hard disk, and the main server’s Disk IO will be increase, which will result in a slow execution of each VPS on this HyperV node.
  • If this does not result in your disk IO below 95%, do the same with another VPS (Second read + write operation), etc.

How can I prevent this problem?

  • You can monitor the use of hard drive and RAM on each VPS. If RAM or HDD usage is over 90%, you can notify your customer to upgrade to a higher plan or purchase additional resources.
  • You can stop automatic updates on any application installed on a Windows VPS.
  • The HyperV integration service must be updated on all virtual machines.

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